TW201532352A - Electrical connector - Google Patents

Abstract

An electrical connector includes a RJ45 port, a first USB port, and a second USB port. The electrical connector includes an inner circuit board and four surface mounted transformers mounted on the inner circuit board. Each surface mounted transformer includes a magnetic core, a primary coil, a secondary coil, a first soldering pad, and a second soldering pad, the first soldering pad connecting the primary coil to the inner circuit board, the second soldering pad connecting the secondary coil to the inner circuit board. Two surface mounted transformers are arranged on the upper part of the inner circuit board, the first soldering pads of said two surface mounted transformers being disposed adjacent to each other.

Description

Electrical connector

The present invention relates to an electrical connector, and more particularly to an arrangement of magnetic components in an electrical connector on a built-in circuit board.

In a conventional electrical connector having an RJ45 jack, the RJ45 jack is formed with four differential signal channels, and the electrical connector includes four pairs of docking terminals connected to the RJ45 jack as one end of each differential signal path as differential a four-ply pin terminal at the other end of the signal path, and a circuit board assembly for connecting the mating terminal and the pin terminal, the circuit board assembly including a built-in circuit board and four isolation transformers mounted on the vertical built-in circuit board. The isolation transformer has a primary coil and a secondary coil. The primary coil and the secondary coil both have two input ends and a center tap. The two input ends of the primary coil and the center tap are distributed in the lateral direction of the isolation transformer. The longitudinally opposite ends of one side, the two input ends of the secondary coil and the center tap are distributed at opposite longitudinal ends of the other side of the isolation transformer. The two input ends of the primary side coil correspond to the central tap corresponding to the high voltage zone, and the two input ends of the secondary side coil correspond to the central tap corresponding to the low pressure zone, and if the high pressure zone is too close to the low pressure zone, a hit will occur The risk of fire. Therefore, in the isolation transformer arrangement, the following rules must be followed: The high voltage zone of an isolation transformer must be as far as possible away from the low voltage zone of the adjacent isolation transformer.

Accordingly, it would be desirable to provide an improved electrical connector that minimizes the risk of sparking during use of the electrical connector.

The technical problem to be solved by the present invention is to provide an electrical connector that minimizes the risk of sparking during use.

In order to solve the above technical problems, the technical means of the present invention is:

An electrical connector having an RJ45 socket, a first USB socket, and a second USB socket that are sequentially stacked in an up and down direction, the RJ45 socket is formed with four differential signal channels, and the electrical connector includes a connection to the The RJ45 jack serves as four pairs of docking terminals at one end of each differential signal path, four pairs of pin terminals as the other ends of the differential signal channels, and a circuit board assembly for connecting the mating terminal and the pin terminal, the circuit board assembly including a vertical built-in circuit board and a plurality of electronic components mounted on the vertical built-in circuit board, the electronic components including four patch isolation transformers respectively connected to the differential signal channels, the four patch isolation transformers On the same side of the built-in circuit board, each of the chip type isolation transformers includes a magnetic core, a primary side coil, a secondary side coil, a first soldering piece, and a second soldering piece, and the primary side coil and the secondary side coil each have two inputs. End and center taps, the first solder tabs are distributed on opposite longitudinal ends of the lateral side of the isolation transformer and connect the two input ends of the primary coil to the center tap a circuit board, the second soldering piece is distributed on opposite longitudinal ends of the isolation transformer laterally opposite to the other side, and the two input ends of the secondary winding and the center tap are connected to the built-in circuit board, wherein the two chip isolation transformers The two solder-type isolation transformers are laterally arranged on the upper side of the built-in circuit board, and the other two chip-type isolation transformers are laterally arranged on the lower side of the built-in circuit board, and the first soldering pieces of the two chip-type isolation transformers on the upper side are opposed to each other.

Compared with the prior art, in the case where the built-in circuit board is narrow, the four chip type isolation transformers are arranged in two rows on the upper and lower boards, wherein two patch types arranged in the upper row The first soldering pieces of the isolating transformer are opposite to each other, that is, the high-voltage regions corresponding to the two chip-type isolating transformers of the upper row are close to each other, thereby avoiding the risk of sparking of the electrical connector during use.

The first figure is a perspective view of an electrical connector in accordance with the present invention;

The second figure is an exploded perspective view of the electrical connector shown in the first figure;

The third figure is an exploded perspective view of another view of the electrical connector shown in the second figure;

The fourth figure is a perspective view of the circuit board assembly shown in the third figure;

Figure 5 is a perspective view of another view of the circuit board assembly shown in Figure 4;

The sixth figure is a perspective view of the patch isolation transformer shown in the fifth figure;

Figure 7 is a front view of the isolation transformer shown in Figure 6 mounted on the first surface of the built-in circuit board in a first arrangement;

Figure 8 is a front view of the isolation transformer shown in the sixth figure mounted on the first surface of the built-in circuit board in a second arrangement; and

The ninth diagram is a circuit diagram of the electrical connector shown in the first figure.

Referring to FIG. 1 to FIG. 9 together, an electrical connector 100 according to the present invention includes an insulative housing 200, a circuit board assembly 130 mounted in the insulative housing 200, and an insulative housing. The mask housing 300 of 200. The mask housing 300 includes a first mask housing 301 and a second mask housing 302, and the first mask housing 301 and the second mask housing 302 are snap-fitted together. The electrical connector 100 has an RJ45 socket 101, a first USB socket 102, and a second USB socket 103 which are sequentially stacked in the up and down direction. The RJ45 socket 101 is formed with four differential signal channels, and the electrical connector 100 is formed. The system includes four pairs of docking terminals 110 connected to the RJ45 jack 101 as one end of each differential signal channel, four pairs of pin terminals 120 as the other ends of the differential signal channels, and a circuit for connecting the mating terminal 110 and the pin terminal 120. Board assembly 130.

The circuit board assembly 130 includes a vertical built-in circuit board 131 and a number of electronic components mounted to the vertical internal circuit board 131. The built-in circuit board 131 includes a first surface 132 and a second surface 133 stacked together, and the width of the built-in circuit board 131 is not less than 10 mm. The electronic component includes four patch isolation transformers 134 respectively connected to the differential signal channels, and the four patch isolation transformers 134 are disposed on the first surface 132. The four patch isolation transformers 134 are a first chip isolation transformer 135, a second chip isolation transformer 136, a third patch isolation transformer 137, and a fourth patch isolation transformer 138. The first patch isolation transformer 135 and the second patch isolation transformer 136 are mounted on the upper side of the first surface 132, and the third patch isolation transformer 137 and the fourth patch isolation transformer 138 are mounted. On the lower side of the first surface 132, the two patch isolation transformers 134 on the upper side are separated from the two patch isolation transformers 134 on the lower side by at least 1.5 mm to prevent high voltage flashover. The electronic component further includes four patch common mode filters 160 respectively connected to the differential signal channels, the four patch common mode filters 160 being laterally arranged on the first surface 132 and located at the The lower side of the four patch isolation transformers 134. The electronic component further includes four tapped ground capacitors 170 disposed on the second surface 133, the relative positions of the four tapped ground capacitors 170 on the second surface 133 and the four patch common mode filters. The relative positions of the 160 on the first surface 132 are the same. The electronic component further includes an array of resistors (not shown) and a high voltage grounding capacitor 180.

Each of the chip type isolation transformers 134 includes a magnetic core 139, a primary side coil 140, a secondary side coil 150, a first bonding piece 143, and a second bonding piece 153. The primary side coil 140 has two first input ends 141 and a first center tap 142. The secondary side coils 150 have two second input ends 151 and a second center tap 152. The first soldering tabs 143 are distributed on opposite longitudinal ends of the lateral side of the patch isolation transformer 134 and connect the first input ends 141 of the primary winding 140 to a first center tap 142. The first surface 132 is described. The second soldering piece 153 is distributed on opposite longitudinal ends of the patch isolation transformer 134 on the opposite side of the other side, and connects the second input ends 151 of the secondary winding 150 to a second center tap 152. To the first surface 132. The first chip isolation transformer 135, the second chip isolation transformer 136, the third patch isolation transformer 137, and the fourth patch isolation transformer 138 respectively pass the first soldering piece 143 and the first Two solder tabs 153 are soldered to the first surface 132. The first solder tab 143 of the first patch isolation transformer 135 and the first solder tab 143 of the second patch isolation transformer 136 are opposed to each other. The third chip isolation transformer 137 and the fourth chip isolation transformer 138 can be arranged in the following two ways: (1) the first soldering piece 143 of the third chip isolation transformer 137 and the The second solder tab 153 of the fourth patch isolation transformer 138 is opposite to each other, and (2) the second solder tab 153 of the third patch isolation transformer 137 and the fourth patch isolation transformer 138 The two soldering pieces 153 are opposed to each other. The first chip type isolation transformer 135, the second chip isolation transformer 136, the third chip isolation transformer 137, and the fourth chip type isolation transformer 138 have two first input ends 141 of the primary side coil 140 passing through The first solder tab 143 is connected to the first surface 132 and is connected to the docking terminal 110 through a conductive line on the built-in circuit board 131. The two second input ends 151 of the first patch isolation transformer 135 and the second patch isolation transformer 136 of the secondary winding 150 are respectively connected to the patch through the conductive lines on the first surface 132. The mode filter 160 has the conductive line passing through the middle of the third chip isolation transformer 137 and the fourth chip isolation transformer 138. The chip type common mode filter 160 is connected to the pin terminal 120. The second center taps 152 of the first chip isolation transformer 135 and the second chip isolation transformer 136 are connected to the corresponding tapped ground capacitors 170 through the conductive lines on the first surface 132, respectively. The conductive line passes through the middle of the third patch isolation transformer 137 and the fourth patch isolation transformer 138. The first patch isolation transformer 135, the second patch isolation transformer 136, the third patch isolation transformer 137, and the first center tap 142 of the fourth patch isolation transformer 138 primary coil 140 are respectively connected first. To the exclusion, it is connected to the high voltage grounding capacitor 180 and finally grounded.

The primary coil and the secondary coil of the chip isolation transformer respectively correspond to a high voltage zone and a low pressure zone. If the high voltage zone and the low pressure zone are too close together, the risk of sparking is likely to occur during the use of the electrical connector. The mask housing corresponds to a low voltage region, and the high voltage region of the patch isolation transformer must be as far as possible away from the mask housing. Therefore, in the case where the width of the built-in circuit board is limited, the present invention arranges four patch type isolation transformers in two rows on the built-in circuit board, and the high-voltage areas of the two patch-type isolation transformers located on the upper side are opposite to each other. The low-voltage zone of the two chip-type isolating transformers is closer to the mask casing than the high-pressure zone, thereby avoiding the risk of sparking as much as possible.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application.

100‧‧‧Electrical connector

200‧‧‧Insulated body

300‧‧‧mask housing

301‧‧‧First mask housing

302‧‧‧Second mask housing

101‧‧‧RJ45 socket

102‧‧‧First USB socket

103‧‧‧Second USB socket

110‧‧‧ docking terminal

120‧‧‧ pin terminal

130‧‧‧Circuit board components

131‧‧‧ Built-in board

132‧‧‧ first surface

133‧‧‧ second surface

L‧‧‧Width

134‧‧‧SMD isolation transformer

135‧‧‧First SMD Isolation Transformer

136‧‧‧Second SMD Isolation Transformer

137‧‧‧ Third SMD Isolation Transformer

138‧‧‧4th SMD Isolation Transformer

139‧‧‧ magnetic core

140‧‧‧ primary coil

141‧‧‧ first input

142‧‧‧First Center Tap

143‧‧‧First soldering piece

150‧‧‧Second side coil

151‧‧‧ second input

152‧‧‧second center tap

153‧‧‧Second welding piece

160‧‧‧SMD common mode filter

170‧‧‧Tap grounding capacitor

180‧‧‧High voltage grounding capacitor

no

135‧‧‧First SMD Isolation Transformer

136‧‧‧Second SMD Isolation Transformer

137‧‧‧ Third SMD Isolation Transformer

138‧‧‧4th SMD Isolation Transformer

140‧‧‧ primary coil

150‧‧‧Second side coil

160‧‧‧SMD common mode filter

L‧‧‧Width

Claims (10)

An electrical connector having an RJ45 socket, a first USB socket, and a second USB socket that are sequentially stacked in an up and down direction, the RJ45 socket is formed with four differential signal channels, and the electrical connector includes a connection to the The RJ45 jack serves as four pairs of docking terminals at one end of each differential signal path, four pairs of pin terminals as the other ends of the differential signal channels, and a circuit board assembly for connecting the mating terminal and the pin terminal, the circuit board assembly including a vertical built-in circuit board and a plurality of electronic components mounted on the vertical built-in circuit board, the electronic components including four patch isolation transformers respectively connected to the differential signal channels, the four patch isolation transformers On the same side of the built-in circuit board, each of the chip type isolation transformers includes a magnetic core, a primary side coil, a secondary side coil, a first soldering piece, and a second soldering piece, and the primary side coil and the secondary side coil each have two inputs. End and center taps, the first solder tabs are distributed on opposite longitudinal ends of the lateral side of the isolation transformer and connect the two input ends of the primary coil to the center tap a circuit board, the second soldering piece is distributed on opposite longitudinal ends of the isolation transformer laterally opposite to the other side, and the two input ends of the secondary winding and the center tap are connected to the built-in circuit board, wherein the two chip isolation transformers The two solder-type isolation transformers are laterally arranged on the upper side of the built-in circuit board, and the other two chip-type isolation transformers are laterally arranged on the lower side of the built-in circuit board, and the first soldering pieces of the two chip-type isolation transformers on the upper side are opposed to each other. The electrical connector of claim 1, wherein the built-in circuit board has a width of not less than 10 mm. The electrical connector of claim 2, wherein the electronic component further comprises four patch common mode filters respectively connected to the differential signal channels, the four patch common mode filters Installed on the lower side of the chip isolation transformer. The electrical connector of claim 3, wherein the four patch isolation transformers are first, second, third, and fourth patch isolation transformers, the first and second a chip isolation transformer is mounted on an upper side of the built-in circuit board, and the third and fourth chip isolation transformers are mounted on a lower side of the built-in circuit board, and the first one of the third patch isolation transformer a soldering piece and a second soldering piece of the fourth chip type isolation transformer are opposite to each other, and the conductive lines of the two input ends of the first and second chip type isolation transformer secondary coils pass through the third and fourth stickers The middle of the chip isolation transformer is connected to the chip type common mode filter. The electrical connector of claim 4, wherein the electronic component further comprises a tapped grounding capacitor disposed on a lower side of the four patch isolation transformers, the first and second patch isolation A conductive line of the center tap of the secondary winding of the transformer passes through the middle of the third and fourth patch isolation transformers and is connected to the tapped grounding capacitor. The electrical connector of claim 5, wherein the conductive lines of the two input ends of the primary coils of the first, second, third, and fourth patch isolation transformers are connected to the docking terminal. The electrical connector of claim 6, wherein the electronic component further comprises an exclusion resistor and a high voltage grounding capacitor, wherein a center tap of the primary coil is connected to the resistor, the resistor connection The high voltage grounding capacitor is grounded. The electrical connector of claim 3, wherein the four patch isolation transformers are first, second, third, and fourth patch isolation transformers, the first and second a chip isolation transformer is mounted on an upper side of the built-in circuit board, the third and fourth patch isolation transformers are mounted on a lower side of the built-in circuit board, and a second second isolation type isolation transformer a soldering piece and a second soldering piece of the fourth chip type isolation transformer are opposite to each other, and the conductive lines of the two input ends of the first and second chip type isolation transformer secondary coils pass through the third and fourth stickers The middle of the chip isolation transformer is connected to the chip type common mode filter. The electrical connector of claim 8, wherein the electronic component further comprises a tapped grounding capacitor disposed on a lower side of the four patch isolation transformers, the first and second patch isolations A conductive line of the center tap of the secondary winding of the transformer passes through the middle of the third and fourth patch isolation transformers and is connected to the tapped grounding capacitor. The electrical connector of claim 3, wherein the common mode filter is coupled to the pin terminal.